updated doc versions

Author: rofrischmann

README.md

@@ -19,11 +19,11 @@ Assuming you are using [npm](https://www.npmjs.com) as your package mananger you
 Otherwise we also provide [UMD](https://github.com/umdjs/umd) builds for each package within the `dist` folder. You can easily use them via [unpkg](https://unpkg.com/).
 ```HTML
 <!-- Unminified versions -->
-<script src="https://unpkg.com/[email protected].2/dist/inline-style-prefixer.js"></script>
-<script src="https://unpkg.com/[email protected].2/dist/inline-style-prefix-all.js"></script>
+<script src="https://unpkg.com/[email protected].4/dist/inline-style-prefixer.js"></script>
+<script src="https://unpkg.com/[email protected].4/dist/inline-style-prefix-all.js"></script>
 <!-- Minified versions -->
-<script src="https://unpkg.com/[email protected].2/dist/inline-style-prefixer.min.js"></script>
-<script src="https://unpkg.com/[email protected].2/dist/inline-style-prefix-all.min.js"></script>
+<script src="https://unpkg.com/[email protected].4/dist/inline-style-prefixer.min.js"></script>
+<script src="https://unpkg.com/[email protected].4/dist/inline-style-prefix-all.min.js"></script>
 ```
 
 # Browser Support